The albas seem to be getting a great reputation from everything I have heard on here. They will be the next ones I get.
I had a 4mil serval with no lock up and ran the hd clutch. It worked but it seemed like it ate clutches pretty quick. I'd get a lockup.
Make sure you get an adjustable timing plate since you are going to stay away from the ricky stator
Maybe you can find a nice set of lakers plastic for sale on here? I'm definitely a fan of fullboar though lol.
If you decided to send your cases out and have the motor assembled by your builder, send the tranny with it and have it pro-mod. It's a lot better than the all stock tranny